Effects of radial losses of particle and energy on the stability of detachment front in a divertor plasma

Satoshi Togo, Makoto Nakamura, Yuichi Ogawa, Katsuhiro Shimizu, Tomonori Takizuka, Kazuo Hoshino

Research output: Contribution to journalArticle

Abstract

Operation under partially detached divertor (PDD) plasmas is a hopeful way in order to reduce the divertor heat load in the next generation tokamaks. The physical mechanism of PDD plasmas, however, has not fully been understood yet. We have studied them with a multi-layer one-dimensional divertor model. The PDD plasmas are successfully reproduced by introducing a neutral gas puffing model. Effect of the cross-field heat transport on the PDD plasmas is investigated. It is found that cross-field heat transport both in the SOL region and in the divertor region prevents detachment fronts from moving upstream in a detached flux tube.

Original languageEnglish
Article number2403087
JournalPlasma and Fusion Research
Volume7
Issue numberSPL.ISS.1
DOIs
Publication statusPublished - 2012

Keywords

  • Cross-field heat transport
  • Detachment front
  • Divertor heat load
  • Neutral model
  • Partially detached divertor plasma
  • Plasma fluid model
  • Thermal stability

ASJC Scopus subject areas

  • Condensed Matter Physics

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